Electric radiator



1,619,865 March 1927' c. A. HEAD ELECTRIC RADIATOR Filed May 3, 1923 2 Sheets-Sheetl jg .Z 7 7 25 l9 /7 9 A? a i/ /7 z /3 g a C? KL 3 I 2 I g A9 Snuwkoz (Z 017 fl Head attains March 8,1927. 1,619,865

C. A. HEAD ELECTRIC RADIATOR Filed may 23." 1923 2 Sheets-Sheet2 6 6037% f'iad v wnmj" M flnom CECIL A. HEAD, OF ROYAL OAK, MICHIGAN.

ELECTRIC EADIAT9R.

Application filed. ma 23,

My invention relates to devices of the above mentioned character and has for its prin cipal object the provision of an electric steam radiator wherein a predetermined degree of heat isautomatically kept.

A further object of iny invention is to provide an electric steafii radiator which when a predetermined pressure arises will automatically remove the water from the heating element.

A still further object of my device is to provide one which is durable and economical in construction and operation and which is absolutely proof against over heating and destroying the heating elements.

Other objects and advantages of my invention will be apparent during the courseof the following description.

In the drawings, which form a part of this specification and in which only preferred forms of my invention age shown;

Figure 1 is a side elevation partly in vertical transversal section of my radiator;

Fig. 2 is a vertical cross-sectional view taken on the line 33 of Fig. 2;

Fig. 3 is a vertical cross sectional view on the line 3-3 of Fig. 1;

Fig. 4 is a similar view showing pressure being. exerted in the radiator, and,

Fig. 5 is a side elevation partly in vertical transverse section of a modification of my device.

Referring in detail to the drawings, wherein like characters ofreference are employed to designate like parts throughout, the numeral 6 designates a radiator which comprises a plurality of tubes 7 connected at the top by passages 8 and at the bottom by a tubular passage 9. An inlet or filling valve 10 is provided in the upper portion of the radiator as indicated at 11, while on the op-' posite side is a safety valve 12. At a point about the vertical center line of the tubular passage 9 is attached a drain cook 13 for the purpose of draining water from the radiator to the correct level.

Numeral 14 designates a heating element which is composed of a pair of electrodes 15,

and 16 which are held in spaced relation by insulating blocks 17 and tie rods 18, as shown in Fig. 2. These tie rods 18 fasten the electrodes 15 and 16 to a plug 19 of insulating material which is. screw threaded into the radiator at 20, so that the outer surface of the electrodes will be concentric with the inner wall of the tubular passage 9. The

1923. Serial No. 640,994.

plug 19 is provided with a recess 21 which is adapted to contain a fuse plug 22 and electrical connecting elements 23 from the source of current 24 to the electrodes as is also clearly shown in Fig. 2. i

Depending from the bottom of the radiator is a short pipe 25 to which is attached a metal bellows or reservoir 26 which is normally held closed by pressure of a helical spring 27, the tension of which is adjustable by means of a thumb screw 28. The purpose of this reservoir or bellows will be hereinafter fully described.

In the operation of my device, water is admitted to the radiator through the valve 10 until it flows from the drain cook 13. The valve and drain cock are then closed and electric current is admitted to the electrodes 15 and 16. The water in the radiator acting as a resistance between the electrodes immediately begins to boil and causes steam to rise in the radiator-where it is condensed by coming into contact with the cooler walls of the tubes 7 flowing down these walls to the water supply in the bottom of the radiator where the operation is repeated.

W hen a predetermined pressure, determined by adjusting the tension of the helical spring 27 by the thumb screw 28, is reached, the water level as indicated by 29 in Fig. 3, is forced down below the electrodes to the level 30 in Fig. 4. In other words, when the pressure in the radiator counter balances the pressure exerted by the tension of the spring 27, the water is forced into the reservoir or bellows 26. When theradiator has slightly cooled or when the pressure in the radiator has diminished the spring 27, forces the water back to the level 29. It is clearly; understood that heat is only generated by water acting as a conductor between the discharged electrodes and when the pressure in the radiator causes this water to fall below the electrodes out of contact with them the 7 generation of heat automatically ceases.

In the modification, illustrated in Fig. 5, a tank 31 is employed instead of the bellows used in the foregoing Iorm. This tank 31 is positioned between a pair of tubes 7 of the radiator 6 and is provided in its upper surface with a small aperture or rent 32. A pipe 33 leads downwardly from the bottom of the tank 31 to the bottom of the radiator and upwardly into the tubular'passage 9. It will be noted that the end 34 of the pipe 33 projects slightly above the bottom of the any departure from the same, such as in shape, size, number and arrangement of parts may be resorted to without departing from the spirit of my invention or from the scope of the subjoined claims.

Having thus described my invention, what I claim and desire to secure and protect by Letters Patent of the United States 1.-In combination with a radiator and a heating element within the radiator to convert water therein into steam; of an expansion chamber outside of the radiator and connected to the lower part of the water space in the radiator, whereby the generation of steam in' the radiator and a consequent rise of pressure therein will force water from the radiator into the chamber and reduce the heating effect of the heater by lowering the water in relation thereto.

2. In combination with a radiator adapted to hold a quantity of water in the bottom portion thereof and to give oif by radiation the heat of steam generated from said water; of a chamber positioned outside of the radiator and connected to the lower part of the space within the radiator containing water, and an electrically operated heating element positioned within the radiator to be immersed in the water contained in the lower part thereof, whereby the pressure of steam generated within the radiator will force the water out of the radiator into said separate chamber and lower the level of water relative to the electrical heating element to vary the heating efi'ect thereof.

3. In combination with a radiator adapted to hold a quantity of water in the bottom portion thereof; of a, chamber located outside of the radiator and communicating with the Water space in the radiator, said chamber being adapted to receive water from the water space in the radiator when steam pressure in the radiator puts a pressure upon the water to force the water out bf the radiatorinto said chamber, and means operative to force the water out of said chamber into the radiator as the steam pressure within the radiator falls.

4. The combination with a radiator adapted to hold a quantity of Water in the bottom portion thereof; of a heating element.

within the radiator adapted to be immersed in water contained in the bottom part of the radiator, a chamber outside of the radiator connected to the bottom portion of the water space within the radiator, and yieldable means acting upon said chamber to yield under steam pressure uponthe water in the radiator and to force the water from said chamber into the radiatorupon the fall of steam pressure.

5. The combination with a radiator having a water space in the lower part thereof and an electrical heating element in said space to be immersed in the water contained therein; of a chamber outside of the radiator and connected to the lower portion of the water space thereof, said chamber being contractible and expandable, and means for contracting said chamber to force the water from the chamber into the radiator.

6. The combination with a radiator having a water space in the lower end thereof and an electrical heating element in said waterspace; of a bellows located outside of the radiator and havingv itsinterior connected with the water space in the radiator to receive water therefrom, and means for contracting the bellows to force water from the bellows into the water space of the radiator.

CECIL A. HEAD. 

